/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.bigtop.datagenerators.bigpetstore.generators.customer;

import java.util.List;

import org.apache.bigtop.datagenerators.bigpetstore.datamodels.Store;
import org.apache.bigtop.datagenerators.samplers.pdfs.ProbabilityDensityFunction;

public class CustomerStorePDF implements ProbabilityDensityFunction<Store>
{
	double populationSum = 0.0;

	public CustomerStorePDF(List<Store> stores)
	{
		for(Store store : stores)
		{
			populationSum += (double) store.getLocation().getPopulation();
		}
	}

	@Override
	public double probability(Store store)
	{
		return ((double) store.getLocation().getPopulation()) / populationSum;
	}

}
